67 lines
No EOL
2.1 KiB
JavaScript
67 lines
No EOL
2.1 KiB
JavaScript
// Test that a memory exception is triggered for in memory sorts, but not for indexed sorts.
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t = db.jstests_sortg;
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t.drop();
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big = new Array( 1000000 ).toString()
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for( i = 0; i < 100; ++i ) {
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t.save( {b:0} );
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}
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for( i = 0; i < 40; ++i ) {
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t.save( {a:big} );
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}
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function memoryException( sortSpec, querySpec ) {
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querySpec = querySpec || {};
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assert.throws( function() {
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t.find( querySpec ).sort( sortSpec ).batchSize( 1000 ).itcount()
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} );
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assert( db.getLastError().match( /too much data for sort\(\) with no index/ ) );
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assert.throws( function() {
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t.find( querySpec ).sort( sortSpec ).batchSize( 1000 ).explain( true )
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} );
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assert( db.getLastError().match( /too much data for sort\(\) with no index/ ) );
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}
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function noMemoryException( sortSpec, querySpec ) {
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querySpec = querySpec || {};
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t.find( querySpec ).sort( sortSpec ).batchSize( 1000 ).itcount();
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if ( 0 ) { // SERVER-5016
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assert( !db.getLastError() );
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}
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t.find( querySpec ).sort( sortSpec ).batchSize( 1000 ).explain( true );
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if ( 0 ) { // SERVER-5016
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assert( !db.getLastError() );
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}
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}
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// Unindexed sorts.
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memoryException( {a:1} );
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memoryException( {b:1} );
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// Indexed sorts.
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noMemoryException( {_id:1} );
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noMemoryException( {$natural:1} );
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t.ensureIndex( {a:1} );
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t.ensureIndex( {b:1} );
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t.ensureIndex( {c:1} );
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// These sorts are now indexed.
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noMemoryException( {a:1} );
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noMemoryException( {b:1} );
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// A memory exception is triggered for an unindexed sort involving multiple plans.
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memoryException( {d:1}, {b:null,c:null} );
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// With an indexed plan on _id:1 and an unindexed plan on b:1, the indexed plan
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// should succeed even if the unindexed one would exhaust its memory limit.
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noMemoryException( {_id:1}, {b:null} );
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// With an unindexed plan on b:1 recorded for a query, the query should be
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// retried when the unindexed plan exhausts its memory limit.
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assert.eq( 'BtreeCursor b_1', t.find( {b:0} ).sort( {_id:1} ).explain().cursor ); // Record b:1 plan
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noMemoryException( {_id:1}, {b:null} );
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t.drop(); |